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Published November 6, 2020 | Version v1
Taxonomic treatment Open

Oligoryzomys longicaudatus

Description

Oligoryzomys longicaudatus

Karyotype: 2n = 56 and FN = 66. Autosomal complement: six small metacentric and submetacentric pairs, and 21 acrocentric pairs (one large and the remaining medium to small decreasing in size). Sex chromosomes: X chromosome presented two different morphologies, a medium submetacentric, and a medium subtelocentric; Y chromosome presented two different morphologies, a small submetacentric, and a small subtelocentric (Gallardo & González 1977, pp. 313, Fig. 1A; Gallardo & Patterson 1985; Espinosa & Reig 1991; Palma et al. 2005; Belmar-Lucero et al. 2009; Palma & Rodríguez-Serrano 2017). Espinosa & Reig (1991) also reported a different fundamental number of 64 for a sample from Rio Negro, state of Argentina, according to the authors this difference was probably due to a pericentric inversion involving an autosomal pair. G-banding was also performed.

Notes

Published as part of Moreira, Camila Do Nascimento, Ventura, Karen, Percequillo, Alexandre Reis & Yonenaga-Yassuda, Yatiyo, 2020, A review on the cytogenetics of the tribe Oryzomyini (Rodentia: Cricetidae: Sigmodontinae), with the description of new karyotypes, pp. 1-111 in Zootaxa 4876 (1) on page 74, DOI: 10.11646/zootaxa.4876.1.1, http://zenodo.org/record/4423612

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Additional details

References

  • Gallardo, M. H. & Patterson, B. D. (1985) Chromosomal differences between two nominal subspecies of Oryzomys longicaudatus Bennett. Mammalian Chromosomes Newsletter, 25, 49 - 53.
  • Espinosa, M. B. & Reig, O. A. (1991) Cytogenetics and karyosystematics of South American oryzomyine rodents (Cricetidae, Sigmodontinae) III. Banding karyotypes of Argentinian Oligoryzomys. Zeitschrift fur Saugetierkunde, 56, 306 - 317.
  • Palma, R. E., Rivera-Milla, E., Salazar-Bravo, J., Torres-Perez, F., Pardinas, U. F. J., Marquet, P. A., Spotorno, A. E., Meynard, A. P. & Yates, T. L. (2005) Phylogeography of Oligoryzomys longicaudatus (Rodentia: Sigmodontinae) in temperate South America. Journal of Mammalogy, 86 (1), 191 - 200. https: // doi. org / 10.1644 / 1545 - 1542 (2005) 086 % 3 C 0191: POOLRS % 3 E 2.0. CO; 2
  • Belmar-Lucero, S., Godoy, P., Ferres, M., Vial, P. & Palma, E. (2009) Range expansion of Oligoryzomys longicaudatus (Rodentia, Sigmodontinae) in Patagonian Chile, and first record of Hantavirus in the region. Revista chilena de historia natural, 82, 265 - 275. https: // doi. org / 10.4067 / S 0716 - 078 X 2009000200008
  • Palma, R. E. & Rodriguez-Serrano, E. (2017) Systematics of Oligoryzomys (Rodentia, Cricetidae, Sigmodontinae) from southern Chilean Patagonia, with the description of a new species. Journal of Zoological Systematics and Evolutionary Research, 56 (2), 280 - 299. https: // doi. org / 10.1111 / jzs. 12199